The BBC has the story.
The 1940’s & 1950’s saw city after city and town after town get rid of the tram network just as American cities disposed of their streetcars. In a number of European cities the thinking was a little more forward looking and they kept their trams. Now trams and indeed streetcars are making a significant come back because of traffic congestion and environmental considerations.
What goes around comes around and with British Trams, especially those in seaside resorts like Blackpool and Southport, they used to do a circular tour for holiday makers.